I've been thinking for a while that Sam and Dean are both part demon--Sam with the power and Dean with the mindset--no matter how hard they try to ignore it, and I can't imagine either of them trying all that hard to keep that side of himself out of sight when hunting down his brother's killers. (Though I think Sam has Dean thinking the fire thing with the maps is more closely related to Bobby's Lilith-finding gadget than to anything else Ruby taught Sam.) And everyone's all bouncy and squee over SamnDean being soulmates, which, so'm I, but given the mental states they're both in post-5x16 (and even more so post-5x17 though this fic has to take place before that episode), I'm having trouble picturing either of them seeing the soulmates thing as anything but another unwanted complication.

Glad you enjoyed!